Corrected dotted half note duration

That explains why I'm experiencing those desyncs while arranging
 The Internationale... And Dimension of Reverie too.

SoXMusicGen.pm

@@ -47,7 +47,7 @@ sub setTempo {
  our $qu=60 / $BPM; # Quarter note
  our $ei=30 / $BPM; # Eighth note
  our $si=15 / $BPM; # Sixteenth note
- our $dha=190 / $BPM; # Dotted-half note
+ our $dha=180 / $BPM; # Dotted-half note
  our $dqu=90 / $BPM; # Dotted-quarter note
  our $dei=45 / $BPM; # Dotted-eighth note
  our $dsi=22.5 / $BPM; # Dotted-sixteenth note

internationale/foreground/verse2

@@ -6,4 +6,4 @@ $ei:G5
 $ei:F5
 $ei:D#5
 $ei:C#5
-1.8:C5
+$dha:C5

internationale/foreground/verse3

@@ -4,4 +4,4 @@ $qu:G5/D#5
 $qu:A#5
 $qu:C#6/C#5
 $qu:G5/A#4
-1.8:G#5/C5
+$dha:G#5/C5

internationale/foreground/verse7

@@ -2,4 +2,4 @@ $qu:G5
 $qu:A#5
 $qu:G#5
 $qu:F5
-1.8:D#5
+$dha:D#5